We mostly believe that our hands are clean, but the reality is far different from our thinking. According to the latest experiment, we perhaps don't clean our hands anywhere close to as nicely as we think. Proper hand washing is very important as our hands can shelter a nasty colony of illness-causing germs, including bugs, E. coli, salmonella, Clostridium difficile, Campylobacter, the superbug MRSA, as well as cold and flu viruses and norovirus.
Special UV camera was used to test different hand-washing techniques. From the typical rinse & shake to the 30 seconds recommended by a leading authority on disease control.
First rub Glo-germ named gel on hand, which simulates how bacteria cling to your skin. The gel is clear but glows under UV light. The gel contains particles similar to the size of bacteria. When the UV light falls into gel covered hands, then they turn white in color. In other words, the whiter the hand, the dirtier they are and the darker they are, the cleaner.
According to a 2013 study by Michigan State University, researchers observed 3,500 people after using public loo simply wash their hands with tap water without using soap and found men were much more likely to wash hands without soap than women. However, rinse and shake don't work much. Only little of the bacteria was removed from the hands after rinsing it under the tap for 3 seconds.
The average length of time people spend in washing their hands is 6 seconds. But this is not the enough time to effectively remove bacteria. And washing hands for only 6 seconds has slightly reduced the white area very slightly.
According to Dr Curtis, the most important part of hand washing is using soap. But soap doesn't kill bacteria, it gets rid of them. This is because one end of soap attaches to water while the other end attaches to dirt.
According to the NHS, this is the exact time duration for washing our hand. In the Michigan State University Study, they found only 5 percent wash their hands for 15 seconds or more. The germ count found after testing was lesser than the germ count after washing for 6 seconds.
The centres for Disease Control and Prevention in the US, which is a leading authority on public hygiene, suggests that 15-30 seconds hand washing is enough to remove harmful bacteria.
Research has found that 85 percent more microbes are transferred through wet hands as compared to dry hands. Automatic hand dryers are good in reducing the number of bacteria you must have come in contact in a public bathroom. Hence, we should avoid using wet towels which are used by many people.